I am migrating my Server from Tomcat-6 to Tomcat-9. My website is designed for the protocol of HTTP/1.1 . The server.xml file
Fwiw: I somehow got my Chrome browser into a really b0rken state, getting it to send a malformed cookie with mismatched quotes: "XSRF-TOKEN=93926112-aa12-440e-8e06-02b7fbce27d5;
Just clearing the cookie from the developer tools wasn't sufficient, but Clear storage
from the sidebar of the Application
tab seems to have done it.